About Arisaema sikokianum

[Iza & Carol Goroff]

The biggest display of Arisaema sikokianum I have ever witnessed is in the
Betty Peterson garden in Minnesota on the banks of the Mississippi River,
solidly in USDA zone 4a.She has hundreds of plants with apparently no
hardiness problems. My single plant has survived -31 F (-35 C) and has
bloomed every year since 1998, showing no signs of decline (and none of
fruiting). Cold hardiness is not the problem!

Iza Goroff
Whitewater Wisconsin USDA zone 4b